Source code for papfa.utils

from importlib import import_module


def make_function_from_path(path):
    if path is None:
        return lambda *x, **y: False

    modules = path.split(".")
    base = modules.pop(0)
    base = __import__(base)
    for module in modules:
        base = getattr(base, module)


def import_string(dotted_path):
    """
    Import a dotted module path and return the attribute/class designated by the
    last name in the path. Raise ImportError if the import failed.
    """
    try:
        module_path, class_name = dotted_path.rsplit(".", 1)
    except ValueError as err:
        raise ImportError("%s doesn't look like a module path" % dotted_path) from err

    module = import_module(module_path)

    try:
        return getattr(module, class_name)
    except AttributeError as err:
        raise ImportError(
            'Module "%s" does not define a "%s" attribute/class'
            % (module_path, class_name)
        ) from err